Angry customer

I went to Woolworths in Somerset mall to exchange a jacket that I bought at canal walk on the 04.06.21. I was assisted by an African lady who called their manager Belinda Thomas who is apparently the store manager. The lady refused to exchange my jacket because she opened the folded part on the wrist cuff and the was a black line that was invisible and that is due to people trying out the jacket when fitting it. Jacket still has a price tag and you can see that it's not worn and is only one week old. Her reasons was Canal walk store should have provided me with a note stating that the jacket had a line, as previously mentioned the line was invisible, store could not see it and I could not but refused and told me to go back to canal walk. She didn't care about my travelling costs and was just not willing to assist. Woolworths is a very huge company not to educate people about such things or include it on their return policy. My number is *** I need assistance on this.